No, X meant Lyle is not a jacked bodybuilder and therefore does not know anything about bodybuilding nutrition. This is a common misconception. I fully admit that I'd prefer to listen to a guy who "looks the part", but rationally I know it's wrong. Lots of people just kind of "stumble their way" into good physiques. I mean seriously, look at a lot of crap you see on this board, yet half the guys giving the advice look pretty damn good. Genetics, drugs, and the simple fact that diet isn't as complicated as some make it out to be are all contributing factors.
And yes, Lyle is an asshole...but a knowledgable asshole.